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Վب࠲.tech#11
Swiftϓϩάϥϛϯάษڧձ
LT(3)
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Who am I?
MAGES. Inc. Game Div.
iOS Developer
@lovee
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ϋοΧιϯ GCD
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ϋοΧιϯʹ͏ Swift
ϋοΧιϯ͍͍ͧɻ
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ϋοΧιϯΒͳ͍ਓʁ
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ϋοΧιϯࢀՃͨ͜͠ͱ͋Δਓʁ
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ϋοΧιϯͰऔͬͨ͜ͱ͋Δਓʁ
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No content
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ϋοΧιϯʹඞཁͳͷ
ेʹ͍Ϛγϯ
• the New MacBook Ͱे
৴པͰ͖Δؒ
•ؒɺେࣄɻͱͯେࣄ
ޮߴ͍Ξτϓοτ
•24࣌ؒલޙ͔͕࣌ؒ͠ͳ͍
ંΕͳ͍৺ˡ͜Εॏཁ
•ϋοΧιϯʹϋϓχϯά͖ͭͷ
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ޮߴ͍Ξτϓοτ
։ൃ։࢝લͷίʔσΟϯάېࢭ
OSS ͷ Library Framework ར༻Մ
ͦ͏ͩɺࣗͷ Framework Λ࡞Ζ͏ɻ
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Swift ͷಛ
Extension ରԠʹΑΔߴ͍֦ுੑ
ීஈ͕ࣗΑ͘͏ϝιουΛ Framework ʹ·ͱΊͪΌ͓͏
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var id = UIDevice.current.identifierForVendor?.description ?? “"
let remainingIndex = id.characters.index(id.startIndex, offsetBy: 8, limitedBy: id.endIndex) ?? id.endIndex
id = id.substring(to: remainingIndex)
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var id = UIDevice.current.identifierForVendor?.description ?? “"
id.keepFirst(8)
// Extension
extension String {
public func keepingFirst(_ n: Int = 1) -> String {
let remainingIndex = self.characters.index(self.startIndex, offsetBy: n, limitedBy: self.endIndex) ?? self.endIndex
return self.substring(to: remainingIndex)
}
}
extension String {
public mutating func keepFirst(_ n: Int = 1) {
self = self.keepingFirst(n)
}
}
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var array = [Int](0 ..< 5) //[0, 1, 2, 3, 4]
͋Εʁ
γϟοϑϧͬͯ
Ͳ͏ΔΜ͚ͩͬʁ
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var array = [Int](0 ..< 5) //[0, 1, 2, 3, 4]
// Fisher-Yates Shuffle Algorithm
for i in array.indices.reversed().dropLast() {
let j = Int(arc4random_uniform(UInt32(i)))
(array[i], array[j]) = (array[j], array[i])
}
//[1, 4, 0, 2, 3]
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var array = [Int](0 ..< 5) //[0, 1, 2, 3, 4]
array.shuffle() //[1, 4, 0, 2, 3]
// Extension
extension Array {
public var shuffled: Array {
var array = self
for i in array.indices.reversed().dropLast() {
let j = Int(arc4random_uniform(UInt32(i)))
(array[i], array[j]) = (array[j], array[i])
}
return array
}
public mutating func shuffle() {
self = self.shuffled
}
}
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https://github.com/el-hoshino/Eltaso
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Thank you
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Swift 3.0 ͷ GCD
ࠓ·Ͱͷ GCD ͷྺ࢙ͷதͰ࠷େͷϦϦʔε
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GCDʢdispatch_…ʣΛΒͳ͍ਓʁ
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ࠓ·Ͱ…
ಉظॲཧʗඇಉظॲཧ
dispatch_sync(<#dispatch_queue_t#>, <#() -> Void#>)
dispatch_async(<#dispatch_queue_t#>, <#() -> Void#>)
ϝΠϯΩϡʔʗάϩʔόϧΩϡʔ
dispatch_get_main_queue()
dispatch_get_global_queue(<#Int#>, <#UInt#>)
ηϚϑΥ
dispatch_semaphore_create(<#Int#>)
dispatch_semaphore_signal(<#dispatch_semaphore_t#>)
dispatch_semaphore_wait(<#dispatch_semaphore_t#>, <#dispatch_time_t#>)
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͜Ε͔Β
DispatchObject Ͱॲཧ͢Δ͜ͱʹ
DispatchQueue
DispatchSemaphore
DispatchTime
DispatchWorkItem
…
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let imageView = UIImageView()
let image = UIImage()
//...
dispatch_async(dispatch_get_main_queue()) {
imageView.image = image
}
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let imageView = UIImageView()
let image = UIImage()
//...
DispatchQueue.main.async {
imageView.image = image
}
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let semaphore = dispatch_semaphore_create(0)
dispatch_async(dispatch_get_global_queue(QOS_CLASS_UTILITY, 0)) {
//Data Downloading...
dispatch_semaphore_signal(semaphore)
}
let waitTime = dispatch_time(DISPATCH_TIME_NOW, Int64(NSEC_PER_SEC) * 60)
if dispatch_semaphore_wait(semaphore, waitTime) == 0 {
print(“Succeeded")
} else {
print("Failed")
}
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let semaphore = DispatchSemaphore(value: 0)
DispatchQueue.global().async {
//...
semaphore.signal()
}
let waitTime = DispatchTime.now() + DispatchTimeInterval.seconds(60)
if semaphore.wait(timeout: waitTime) == .success {
print("Succeeded")
} else {
print("Failed")
}
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let semaphore = DispatchSemaphore(value: 0)
DispatchQueue.global().async {
//...
semaphore.signal()
}
let waitTime = DispatchTime.now() + .seconds(60)
if semaphore.wait(timeout: waitTime) == .success {
print("Succeeded")
} else {
print("Failed")
}
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ৄ͘͠ https://developer.apple.com/
reference/dispatch ·Ͱ
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dispatch_once ͓͘ͳΓʹ…
ΘΓʹ static lazy var ͳͲΛ׆༻͠Ζͱͷ͜ͱ
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Thank you